Spring-fastener for boxes, &amp;c.



L. B. PRAHAR.

SPRING FASTENER FOR BOXES, &c.

APPLICATION man OCT. 21. 1915.

1,177,269. Patented Mar. 28,1916.

' lnvemffzr :HB donumim PLAISOURAPH 20.. WASHINGTON, D. c.

LOUIS B. PRAHAR, OF MASSAIE EQUA, NEWYORK.

SPRING-FASTENER FOR BOXES, 8w.

Specification of Letters Patent.

Patented Mar. 28, 1916.

Application filed October 27, 1915. Serial No. 58,130.

To all whom it may concern:

ments in spring fasteners for boxes, cigarettecases,'pocket-bo0ks, or the like, and the object of the invention is to simplifythe construction, reduce the number of parts, steps in operation and the cost of manufacture and assembly.

My invention is particularly applicable to metal cigarette cases although it is of course evident that it might be-employed for holding together any two sections or hinged arts. p My invention involves certain details of construction, certain forms of which are shown in the accompanying drawings to which reference is to be had and in which similar reference characters indicate correspcnding parts in the several views.

In these drawings, Figure 1 is an edge View of a cigarette case having a fastener constructed in accordance with my invention; Fig. 2 is a transverse section on the line 22 of Fig. 1; Fig. 3 is a transverse section on the line 3-3 of Fig. 1; Fig. 4 is a perspective view of the catch member separate from the case; Fig. 5 is a perspective view of a modified form of catch member; and Fig. 6 is a section similar to Fig. 2, but embodying the form of catch shown in Fig. 5.

In the accompanying drawings, I have shown my invention as applied to a sheet metal cigarette case including two sections 10 and 11 connected by a spring hinge 12. Each section is stamped from a single piece of sheet metal so as to provide a flat body portion and a peripheral flange portion, the flange portions of the two sections meetmg to form the peripheral wall of the box.

I do not claim any novelty in the box itself and I wish it understood that my invention may be applied to boxes of other form, shape and construction.

My improved spring fastener, in the form shown in Figs. 1 to 4 inclusive, includes a single piece of sheet metal having the neces-.

sary thickness to give the required strength and having the necessary resiliency to msure ease and certainty of operation. The

fastener member includes an elongated body port10n.13 adapted to lie along the inner surface of the wall of one section, for ins stance the section 10, adjacent to the free edge thereof. At one end, the body portion has 4 edges. The flange 14 is bent to lie in a plane substantially at right angles to the plane of the body portion and'eXtendsoutwardl-y through a slot in the wall of the case section 10. The other flange 15 is bent to lie' approximately parallel to and just inside of the wall of theopposite section 11' ofvthe case. The-flange 1 5.is soconstructed' as to interlock withthe section 11 and, when in normal position, hold the two 'sectionstogether. In the specific form illustrated, the

flange 15 is provided with an aperture 16 adapted'to snap or spring over a projection 17 extending inwardly from the case section 11. Although the projection 17 may be formed integral with the case sectionll, I

have shown it as a stud extending through the wall and rivetedthereto. I have shown the flange 15 as having an aperture to slip' over this stud and receive it, but it is of course evident that the flange 15 might be in the form of a stud which would snap over the edge of an aperture or behind ashoulder' on the section 11. As the flange 14 is at right angles to the plane of the body portion, pressure applied to the outer end of the flange will force the body, portion inwardly from the wall of the section 10 and will disengage the flange 15 from the projection 17. At the same time any tendency ofthe case to open when the fastener is in position, will tend to pull the body portion 13 of the fastener laterally substantially in its own plane, but such pulling strain is resisted by the engagement of the flange 14 within the aperture in the wall. For attaching the fastener member to the wall of the casing, the body portion 13 is provided with a flange 18 adjacent to the opposite end from that hearing the flanges 14 and 15. The flange 18 is struck up from the center of a recess so as to lie in substantially the same plane as the flange 14. The flange 18 is very much smaller and shorter than the general direction of the lengthof the'me'rn-- ber. i This is important as the metal isr thin and resilient and the angles thir oii'ghi ,ivhich the metal isrbent approach or equal Q90". The member iscut from the stockso that the, 7 grain of themetal is lengthwise ,oi:' the body portion. All of {the bending thus comes 7 along gate grainjrather than ,tfansiersely thereof aha-,1 this iiimtemuy reduce the liability .to breaking of the parts daring; bending or While use. L

In ale'rorm shown n Figs. ,1 a 4 in! elusive the body portion 13 liefs si bstantially flat against the surfaceof the Wall of i V the case. this is not essential as the-body portion may, be set edgewise metal may beemployed in its manufacture ,1n thespecifioform shown in Figs; 5 and j 6,.1 have showna fastener {member in Whfeh the body portion 13' liesin a plan atright angles to the plane of theadjacentawall to which it is attached. This permits the flange 18" to lie in the same plane with the body portion and necessitates a slightlydif:

; feren't bending of the flanges 14 and 15 Having thus described my .inventiomwhat a Igclaim as new and-desire .to secure by Letters Patent 1s; 3 v y 1. The comb nation with two hinged :mem

bers, of a fastener it'ormedof a single piece Tim's, less 5 otsheet metal anemia-g a spring tidyr tion, a lug at one edge thereof, spaced from 40 members and riveted to retain said fasteneriii'poSition, a'lng at the opposite end of said body portion and adapted to cooperate With the ot-l'ier member, anda third lug adjeeem- ,45 to the last mentioned lug and projecting through the, Wall or themember to which said fastener is secured andserving as means for disengaging the second mentioned lug, each vof said lugs being bent ,to lie at, an anglers the lane. ofsaidbodyfportion; I 1

2. The emanation iivi'th we hingies mem er o a fast ner fo ed O a p iece of sheet metal incli diiig'a spring boily portion, a l'ug'proj'ecting thironghionelo I members and rivetedfto 'i'etai said jasterrei: imposition, a. lug at; the oppo'sltefend {offsa ids may portion and anaea;weaapsrae was 26th 'dayof October, AMD. 1915 .v

Fnonnnon Lizynin.

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